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JEE Main Physics question

PhysicsGravitationJEE Main

If a satellite is revolving around a planet of mass in an elliptical orbit of semi-major axis , find the orbital speed of the satellite when it is at a distance from the focus.

Answer: (A)

Solution

This is the standard vis-viva equation for a Keplerian orbit, derived from conservation of energy and angular momentum:

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Question ID VK-154486